How to test an Android Library Project

Question

I am writing an Android Library Project basing on Android Bitmap class (call it AndroindLib) which contains only utility class (no activity). I tried to test it using Android JU

Answer 1

Per the documentation:

Testing a library module is the same as testing an app. The main difference is that the library and its dependencies are automatically included as dependencies of the test APK. This means that the test APK includes not only its own code, but also the library's AAR and all its dependencies. Because there is no separate "app under test," the androidTest task installs (and uninstalls) only the test APK. When merging multiple manifest files, Gradle follows the default priority order and merges the library's manifest into the test APK's main manifest.